/Engine/Plugins/Editor/ContentBrowser/ContentBrowserAssetDataSource/Source/ContentBrowserAssetDataSource/Public/ContentBrowserAssetDataSource.h
Called to provide custom drag and drop handling when a drag event is dropped on an item.
True if this data source can handle the drag event (even if it didn't because it was invalid), or false to allow another data source (or the default handler) to deal with it instead.
virtual bool HandleDragDropOnItem ( const [FContentBrowserItemData](API\Editor\ContentBrowserData\FContentBrowserItemData) & InItem, const [FDragDropEvent](API\Runtime\SlateCore\Input\FDragDropEvent) & InDragDropEvent )